如果因为我，能有更好的果实和更美的花朵，我就心满意足了。

现代采石场管理需要地质学家的眼睛、工程师的双手和诗人的心灵。

个人行为并非为了最大化独立存在的效用函数。

Human kindness has never weakened the stamina or softened the fiber of a free people. A nation does not have to be cruel to be tough.

A sense of responsibility is the mark of a noble character.

I am happy and proud of what I have done， but not completely satisfied.

成功不是偶然的，而是必然的。